Re: [Bacula-users] LTO5 performance

On 04/12/2013 02:21 PM, Sergio Belkin wrote:

Hi guys,

I come back with something with I've found, the server where the SD resides has 2 jobs. One runs really slow, it backus mainly small files, while another one on the same machine with bigger files runs at rates around 20 times faster! Could it the cause? I mean, the bunch of small files?

Thanks in advance!

2013/3/22 John Drescher <drescherjm AT gmail DOT com>

> I've added Data Spool in a job resource and the following options to
> Storage Device resource :
>
> Maximum Spool Size = 10gb
> Maximum Job Spool Size = 5gb
> Spool Directory = /extra/bacula_spool
> Fast Forward Space File = yes
> Maximum Block Size = 262144
> Maximum Network Buffer Size = 262144
> Maximum File Size = 5GB
>
> But it causes a mess it crashes others services (a segfault in a imap
> server) and the bacula error was:
>
> "Fatal error: Network error with FD during Backup: ERR=Interrupted system call"

Problem with the nic?

> Am I doing something wrong?
>

I do not see anything that is obviously wrong.

John

small files, are always a great impact on performance.
This could be one of the major issues you have with performance.
there could be other too.

you could do a test and pack all the small files to a compressed file, and back that
up from that server, and see if you get performance near to the server
you backup with large files.

cheers
Carsten

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